Dr. Craig Spencer, who was the first Ebola patient in New York City, smiles during a news conference at New York's Bellevue Hospital, Tuesday, Nov. 11, 2014. Spencer was released from the hospital on Tuesday, where medical team members were cheering, 19 days after he was diagnosed with the virus. (AP Photo/Richard Drew)

NEW YORK, NY - NOVEMBER 11: Dr. Craig Spencer, who was diagnosed with Ebola in New York City last month, greets some of the nurses who helped him to recovery at a news conference at New York's Bellevue Hospital after being declared free of the disease on November 11, 2014 in New York City. Spencer, a 33 year old Doctors Without Borders physician, was diagnosed last month after returning from treating patients in Guinea. He became the first person to test positive for the deadly virus in the New York City and was treated in isolation at the hospital. Spencer's case started a controversy about voluntary quarantine after he travelled the city in the days after returning from Africa unaware that he was carrying the virus. After being released, Spencer he is expected to return to his apartment in the New York City neighborhood of Hamilton Heights. (Photo by Spencer Platt/Getty Images)

NEW YORK, NY - NOVEMBER 11: Dr. Craig Spencer, who was diagnosed with Ebola in New York City last month, walks with New York Mayor Bill de Blasio at a news conference at New York's Bellevue Hospital after being declared free of the disease on November 11, 2014 in New York City. Spencer, a 33 year old Doctors Without Borders physician, was diagnosed last month after returning from treating patients in Guinea. He became the first person to test positive for the deadly virus in the New York City and was treated in isolation at the hospital. Spencer's case started a controversy about voluntary quarantine after he travelled the city in the days after returning from Africa unaware that he was carrying the virus. After being released, Spencer he is expected to return to his apartment in the New York City neighborhood of Hamilton Heights. (Photo by Spencer Platt/Getty Images)

Dr. Craig Spencer (R) shakes hands with New York City Mayor Bill de Blasio as medical staff applaud at a news conference November 11, 2014 at Bellevue Hospital in New York. After being treated at Bellevue for Ebola, Spencer, a 33-year-old New York doctor who became America's last known Ebola case, has been declared free of the virus and was discharged. The United States has treated nine victims of the virus, which spreads through contact with infected bodily fluids. AFP PHOTO/Don Emmert (Photo credit should read DON EMMERT/AFP/Getty Images)

NEW YORK, NY - NOVEMBER 11: Dr. Craig Spencer, who was diagnosed with Ebola in New York City last month, hugs New York Mayor Bill de Blasio at a news conference at New York's Bellevue Hospital after being declared free of the disease on November 11, 2014 in New York City. Spencer, a 33 year old Doctors Without Borders physician, was diagnosed last month after returning from treating patients in Guinea. He became the first person to test positive for the deadly virus in the New York City and was treated in isolation at the hospital. Spencer's case started a controversy about voluntary quarantine after he travelled the city in the days after returning from Africa unaware that he was carrying the virus. After being released, Spencer he is expected to return to his apartment in the New York City neighborhood of Hamilton Heights. (Photo by Spencer Platt/Getty Images)

Dr. Craig Spencer, foreground, who was the first Ebola patient in New York City, is hugged by New York Mayor Bill de Blasio during a news conference at Bellevue Hospital, Tuesday, Nov. 11, 2014 in New York. Spencer was released from Bellevue Hospital on Tuesday, 19 days after he was diagnosed with the virus. The physician had been working with Doctors Without Borders. (AP Photo/Richard Drew)

NEW YORK, NY - NOVEMBER 11: Dr. Craig Spencer, who was diagnosed with Ebola in New York City last month, greets some of the nurses who helped him to recovery at a news conference at New York's Bellevue Hospital after being declared free of the disease on November 11, 2014 in New York City. Spencer, a 33 year old Doctors Without Borders physician, was diagnosed last month after returning from treating patients in Guinea. He became the first person to test positive for the deadly virus in the New York City and was treated in isolation at the hospital. Spencer's case started a controversy about voluntary quarantine after he travelled the city in the days after returning from Africa unaware that he was carrying the virus. After being released, Spencer he is expected to return to his apartment in the New York City neighborhood of Hamilton Heights. (Photo by Spencer Platt/Getty Images)

Dr. Craig Spencer smiles during a news conference November 11, 2014 at Bellevue Hospital in New York. After being treated at Bellevue for Ebola, Spencer, a 33-year-old New York doctor who became America's last known Ebola case, has been declared free of the virus and was discharged. The United States has treated nine victims of the virus, which spreads through contact with infected bodily fluids. AFP PHOTO/Don Emmert (Photo credit should read DON EMMERT/AFP/Getty Images)

Dr. Ram Raju, head of the Health and Hospitals Corporation, the city's public hospitals umbrella organization, touted New York medical facilities as the best in the world. (NYC Mayor's Office)

Raju then hugged Spencer as he walked away from the podium. (NYC Mayor's Office)

Dr. Laura Evans, who headed the team that cured Spencer, insisted the fight against Ebola is not in New York, but in West Africa. (NYC Mayor's Office)

Dr. Craig Spencer (R) receives a hug from head physician Dr.Laura Evans at a news conference November 11, 2014 at Bellevue Hospital in New York. After being treated at Bellevue for Ebola, Spencer, a 33-year-old New York doctor who became America's last known Ebola case, has been declared free of the virus and was discharged. The United States has treated nine victims of the virus, which spreads through contact with infected bodily fluids. AFP PHOTO/Don Emmert (Photo credit should read DON EMMERT/AFP/Getty Images)

Evans then hugged an emotional Spencer, who said "thank you so much, for everything," as the two embraced. (NYC Mayor's Office)

NEW YORK, NY - OCTOBER 25: A young man, dressed in a biohazard costume, stands on the corner of 546 West 147th Street on October 25, 2014 in New York City. After returning to New York City from Guinea, where he was working with Doctors Without Borders treating Ebola patients, Dr. Craig Spencer was quarantined after showing symptoms consistent with the virus. Spencer was taken to Bellevue hospital to undergo testing where he was officially diagnosed with the Ebola virus on October 23. (Photo by Bryan Thomas/Getty Images)

Police set up a barrier in front of The Gutter bowling alley in Brooklyn, New York, on October 24, 2014. Doctor Craig Spencer visited the bowling alley before being Quarantined at the Bellevue Hospital after testing positive for Ebola. Spencer, a member of Doctors Without Borders, who recently returned from treating Ebola patients in Guinea, the epicenter of the world's worst outbreak of the disease, tested positive for Ebola on October 23, making him the city's first Ebola patient. New York's mayor said America's largest city was fully equipped to handle Ebola as authorities sought to calm fears Friday about the virus spreading, after a doctor tested positive for the disease. AFP PHOTO/Jewel Samad (Photo credit should read JEWEL SAMAD/AFP/Getty Images)

NEW YORK, NY - OCTOBER 26: Dr. Ramanathan Raju, President and CEO of New York City Health and Hospitals Corporation, speaks at a press conference at Bellvue Hospital regarding the ongoing situation with Dr. Craig Spencer, who is being treated after contracting Ebola while working with Doctors Without Borders in West Africa, on October 26, 2014 in New York City. The state of New York, along with New Jersey and Illinois, recently instituted a mandatory quarantine period for anyone in direct contact with Ebola patients returning from West Africa. The White House has asked the states to reconsider the mandatory quarantine. (Photo by Andrew Burton/Getty Images)

WASHINGTON, DC - OCTOBER 24: Jeff Hulbert of Annapolis, Maryland, holds up a sign in front of the White House on October 24, 2014 in Washington, D.C. Hulbert is protesting for a mandatory quarantine for people that have returned from Ebola affected countries. (Photo by Mark Wilson/Getty Images)

New York Governor Andrew Cuomo, left, speaks as New Jersey Governor Chris Christie listens at a news conference, Friday, Oct. 24, 2014 in New York. The governors announced a mandatory quarantine for people returning to the United States through airports in New York and New Jersey who are deemed "high risk." In the first application of the new set of standards, the states are quarantining a female healthcare worker returning from Africa who took care of Ebola patients. (AP Photo/Mark Lennihan)

Dr. Craig Spencer, of Columbia University Medical Center, has been identified by the New York Daily News as a doctor who recently returned from treating Ebola patients in Guinea. CUMC is near to the West 147th Street apartment the 33-year-old doctor was taken from on Thursday, October 23. (Facebook)

Dr. Craig Spencer, of Columbia University Medical Center, has been identified by the New York Daily News as a doctor who recently returned from treating Ebola patients in Guinea. CUMC is near to the West 147th Street apartment the 33-year-old doctor was taken from on Thursday, October 23. (Facebook)

New York Gov. Andrew Coumo speaks during a news conference at Bellevue Hospital to discuss Craig Spencer, a Doctors Without Borders physician who tested positive for the Ebola virus, Thursday, Oct. 23, 2014, in New York. Spencer recently returned to the city after treating Ebola patients in West Africa. (AP Photo/John Minchillo)

New York Governor Andrew Cuomo, left, listens as New Jersey Governor Chris Christie talks at a news conference, Friday, Oct. 24, 2014 in New York. The governors announced a mandatory quarantine for people returning to the United States through airports in New York and New Jersey who are deemed "high risk." In the first application of the new set of standards, the states are quarantining a female healthcare worker returning from Africa who took care of Ebola patients. (AP Photo/Mark Lennihan)

A sign on the gate for the entrance to Bellevue Hospital is viewed on October 24, 2014 in New York, the morning after it was confirmed that Craig Spencer, a member of Doctors Without Borders, who recently returned to New York from West Africa tested positive for Ebola. New York confirmed the first case of Ebola in the largest city in the United States as the EU dramatically ramped up aid Friday to contain the killer epidemic ravaging west Africa.The EU announcement of one billion euros ($1.3 billion) for the worst-hit countries comes as fears of a spread of the virus grew, with the first confirmed case in Mali, where a two-year-old girl has tested positive. Craig Spencer was placed in isolation at Manhattan's Bellevue Hospital Center, officials said. (TIMOTHY A. CLARY/AFP/Getty Images)

A newspaper vendor holds up a copy of the NY Post in front of the entrance to Bellevue Hospital October 24, 2014 in New York, the morning after it was confirmed that Craig Spencer, a member of Doctors Without Borders, who recently returned to New York from West Africa tested positive for Ebola. New York confirmed the first case of Ebola in the largest city in the United States as the EU dramatically ramped up aid Friday to contain the killer epidemic ravaging west Africa.The EU announcement of one billion euros ($1.3 billion) for the worst-hit countries comes as fears of a spread of the virus grew, with the first confirmed case in Mali, where a two-year-old girl has tested positive. Craig Spencer was placed in isolation at Manhattan's Bellevue Hospital Center, officials said. (TIMOTHY A. CLARY/AFP/Getty Images)

Residents pass the apartment building of Doctor Craig Spencer on October 24, 2014 in New York. Spencer, a member of Doctors Without Borders, who recently returned from treating Ebola patients in Guinea, the epicenter of the world's worst outbreak of the disease, tested positive for Ebola on October 23, making him the city's first Ebola patient. (DON EMMERT/AFP/Getty Images)

NEW YORK, NY - OCTOBER 23: In this image handout provided by the Office of Mayor of New York, Mayor Bill de Blasio speaks with U.S. President Barack Obama following an ebola-related press conference at Bellevue Hospital in in New York City. After returning to New York City from Guinea where he was working with Doctors Without Borders treating Ebola patients, Dr. Craig Spencer was quarantined after showing symptoms consistent with the virus. Spencer was taken to Bellevue hospital to undergo testing. According to reports, test results have confirmed that Spencer has been diagnosed with the Ebola virus. (Photo by Rob Bennett/Office of Mayor of New York/Getty Images)

New York Police Department officers guard TV news trucks on 1st Avenue in front of Bellevue Hospital on October 24, 2014. Doctor Craig Spencer, a member of Doctors Without Borders, who recently returned from treating Ebola patients in Guinea, the epicenter of the world's worst outbreak of the disease, tested positive for Ebola on October 23, making him the city's first Ebola patient. (TIMOTHY A. CLARY/AFP/Getty Images)

NEW YORK, NY - OCTOBER 24: Police keep members of the media and others back from the closed Brooklyn bowling alley that New York City's first Ebola patient visited before showing symptoms of the virus on October 24, 2014 in New York City. Dr. Craig Spencer, who returned to the US from Guinea 10 days ago, tested positive for Ebola on Thursday and is now being cared for at Bellevue Hospital. Spencer, a member of Doctors Without Borders, recently visited the Williamsburg bowling alley The Gutter. The Gutter has closed temporarily as an extra precaution and to be cleaned. (Photo by Spencer Platt/Getty Images)

NEW YORK, NY - OCTOBER 24: An employee from Bio Recovery Corporation carries equipment into 546 West 147th Street, the apartment building of Dr. Craig Spencer, the doctor recently diagnosed with Ebola, on October 24, 2014 in New York City. Bio Recovery Corporation was handling the clean-up of Dr. Spencer's apartment after he was diagnosed with Ebola on Thursday night. (Photo by Bryan Thomas/Getty Images)

NEW YORK, NY - OCTOBER 24, 2014: United States Postal Service mailman Keven Ngo makes a delivery to West 147th Street, while wearing a protective mask, on October 24, 2014 in New York, NY. Ngo said that he didn't typically wear a mask but, since Dr. Craig Spencer was diagnosed with Ebola, he had begun wearing the mask for his protection. (Photo by Bryan Thomas/Getty Images)

Demonstrators with the United African Congress (UAC) hold a rally for the 'Stop Ebola' movement in New York on October 24, 2014 the morning after it was confirmed that Doctor Craig Spencer, a member of Doctors Without Borders, who recently returned to New York from West Africa tested positive for Ebola, making him New York City's first Ebola patient. (TIMOTHY A. CLARY/AFP/Getty Images)

Police stand in front of the gate of The Gutter bowling alley in Brooklyn, New York, on October 24, 2014. Doctor Craig Spencer visited the bowling alley before being Quarantined at the Bellevue Hospital after testing positive for Ebola. Spencer, a member of Doctors Without Borders, who recently returned from treating Ebola patients in Guinea, the epicenter of the world's worst outbreak of the disease, tested positive for Ebola on October 23, making him the city's first Ebola patient. New York's mayor said America's largest city was fully equipped to handle Ebola as authorities sought to calm fears Friday about the virus spreading, after a doctor tested positive for the disease. (JEWEL SAMAD/AFP/Getty Images)

Hazmat crews arrive outside the apartment building of Dr. Craig Spencer, a member of Doctors Without Borders, October 24, 2014 in New York. Spencer, who has been diagnosed with Ebola is being treated in an isolation ward at Manhattan's Bellevue Hospital, a designated Ebola center. New York's mayor said America's largest city was fully equipped to handle Ebola as authorities sought to calm fears Friday about the virus spreading after a doctor tested positive for the disease. Craig Spencer, 33, was in a stable condition in isolation at Bellevue Hospital Center on Friday after testing positive for the illness, which has killed nearly 4,900 people in West Africa. He was rushed to the hospital with fever and gastrointestinal symptoms on Thursday, a week after returning from treating Ebola patients in Guinea with charity Doctors Without Borders. (DON EMMERT/AFP/Getty Images)

Hazmat crews arrive outside the apartment building of Dr. Craig Spencer, a member of Doctors Without Borders, October 24, 2014 in New York. Spencer, who has been diagnosed with Ebola is being treated in an isolation ward at Manhattan's Bellevue Hospital, a designated Ebola center. New York's mayor said America's largest city was fully equipped to handle Ebola as authorities sought to calm fears Friday about the virus spreading after a doctor tested positive for the disease. Craig Spencer, 33, was in a stable condition in isolation at Bellevue Hospital Center on Friday after testing positive for the illness, which has killed nearly 4,900 people in West Africa. He was rushed to the hospital with fever and gastrointestinal symptoms on Thursday, a week after returning from treating Ebola patients in Guinea with charity Doctors Without Borders. (DON EMMERT/AFP/Getty Images)

Traffic passes Bellevue Hospital, Friday, Oct. 24, 2014, in New York. Dr. Craig Spencer, a resident of New York City and a member of Doctors Without Borders, was admitted to Bellevue Thursday and has been diagnosed with Ebola. (AP Photo/Mark Lennihan)

NEW YORK, NY - OCTOBER 23: Police officers stand outside 546 W. 147th street, the apartment building of Dr. Craig Spencer, October 23, 2014 in New York City. After returning to New York City from Guinea where he was working with Doctors Without Borders treating Ebola patients, Spencer was quarantined after showing symptoms consistent with the virus. Spencer was taken to Bellevue hospital to undergo testing. (Photo by Bryan Thomas/Getty Images)

NEW YORK, NY - OCTOBER 23, 2014: A health alert is displayed at the entrance to Bellevue Hospital October 23, 2014 in New York City. After returning to New York City from Guinea where he was working with Doctors Without Borders treating Ebola patients, Dr. Craig Spencer was quarantined after showing symptoms consistent with the virus. Spencer was taken to Bellevue hospital to undergo testing. (Photo by Bryan Thomas/Getty Images)

NEW YORK, NY - OCTOBER 23: A New York City Police officer stands at the entrance to Bellevue Hospital October 23, 2014 in New York City. After returning to New York City from Guinea where he was working with Doctors Without Borders treating Ebola patients, Dr. Craig Spencer was quarantined after showing symptoms consistent with the virus. Spencer was taken to Bellevue hospital to undergo testing. (Photo by Bryan Thomas/Getty Images)

NEW YORK, NY - OCTOBER 08: Bellevue Hospital is viewed following a news conference on how the facility would receive a suspected Ebola patient on October 8, 2014 in New York City. If the patient was confirmed to be carrying the deadly virus the person would be sent to an isolation unit for treatment. The first person diagnosed with Ebola in the United States, Liberian Thomas Duncan, has died at a Dallas hospital, Texas Health Presbyterian Hospital said. (Photo by Spencer Platt/Getty Images)

Ebola Virus at 108,000 Magnification (Getty)

NEW YORK, NY - OCTOBER 08: A member of Bellevue's Hospital staff wears protective clothing during a demonstration on how they would receive a suspected Ebola patient on October 8, 2014 in New York City. If the patient was confirmed to be carrying the deadly virus the person would be sent to an isolation unit for treatment. The first person diagnosed with Ebola in the United States, Liberian Thomas Duncan, has died at a Dallas hospital, Texas Health Presbyterian Hospital said. (Photo by Spencer Platt/Getty Images)

NEW YORK, NY - OCTOBER 08: Bellevue Hospital is viewed following a news conference on how the facility would receive a suspected Ebola patient on October 8, 2014 in New York City. If the patient was confirmed to be carrying the deadly virus the person would be sent to an isolation unit for treatment. The first person diagnosed with Ebola in the United States, Liberian Thomas Duncan, has died at a Dallas hospital, Texas Health Presbyterian Hospital said. (Photo by Spencer Platt/Getty Images)

NEW YORK, NY - OCTOBER 08: Bellevue Hospital is viewed following a news conference on how the facility would receive a suspected Ebola patient on October 8, 2014 in New York City. If the patient was confirmed to be carrying the deadly virus the person would be sent to an isolation unit for treatment. The first person diagnosed with Ebola in the United States, Liberian Thomas Duncan, has died at a Dallas hospital, Texas Health Presbyterian Hospital said. (Photo by Spencer Platt/Getty Images)

NEW YORK, NY - OCTOBER 08: Members of Bellevue Hospital staff wear protective clothing as they demonstrate how they would receive a suspected Ebola patient on October 8, 2014 in New York City. If the patient was confirmed to be carrying the deadly virus the person would be sent to an isolation unit for treatment. The first person diagnosed with Ebola in the United States, Liberian Thomas Duncan, has died at a Dallas hospital, Texas Health Presbyterian Hospital said. (Photo by Spencer Platt/Getty Images)

NEW YORK, NY - OCTOBER 08: Members of Bellevue Hospital staff wear protective clothing as they demonstrate how they would receive a suspected Ebola patient on October 8, 2014 in New York City. If the patient was confirmed to be carrying the deadly virus the person would be sent to an isolation unit for treatment. The first person diagnosed with Ebola in the United States, Liberian Thomas Duncan, has died at a Dallas hospital, Texas Health Presbyterian Hospital said. (Photo by Spencer Platt/Getty Images)

Ebola Zaire virus (Getty)

NEW YORK, NY - OCTOBER 08: A member of Bellevue's Hospital staff wears protective clothing during a demonstration on how they would receive a suspected Ebola patient on October 8, 2014 in New York City. If the patient was confirmed to be carrying the deadly virus the person would be sent to an isolation unit for treatment. The first person diagnosed with Ebola in the United States, Liberian Thomas Duncan, has died at a Dallas hospital, Texas Health Presbyterian Hospital said. (Photo by Spencer Platt/Getty Images)

NEW YORK, NY - OCTOBER 08: Members of Bellevue Hospital staff wear protective clothing as they demonstrate how they would receive a suspected Ebola patient on October 8, 2014 in New York City. If the patient was confirmed to be carrying the deadly virus the person would be sent to an isolation unit for treatment. The first person diagnosed with Ebola in the United States, Liberian Thomas Duncan, has died at a Dallas hospital, Texas Health Presbyterian Hospital said. (Photo by Spencer Platt/Getty Images)

NEW YORK, NY - OCTOBER 24: A police car sits in front of 546 W. 147th street, the apartment building of Dr. Craig Spencer, a doctor recently diagnosed with Ebola, on October 24, 2014 in New York, NY. The doctor, who recently returned from Guinea after working with Doctors Without Borders, was diagnosed with Ebola on Thursday evening after developing a fever earlier in the day. (Photo by Bryan Thomas/Getty Images)

NEW YORK, NY - OCTOBER 23: A health alert is displayed at the entrance to Bellevue Hospital October 23, 2014 in New York City. After returning to New York City from Guinea where he was working with Doctors Without Borders treating Ebola patients, Dr. Craig Spencer was quarantined after showing symptoms consistent with the virus. Spencer was taken to Bellevue hospital to undergo testing. (Photo by Bryan Thomas/Getty Images)

NEW YORK, NY - OCTOBER 23: A man mops the lobby of 546 W. 147th street, the apartment building of Dr. Craig Spencer, October 23, 2014 in New York City. After returning to New York City from Guinea where he was working with Doctors Without Borders treating Ebola patients, Spencer was quarantined after showing symptoms consistent with the virus. Spencer was taken to Bellevue hospital to undergo testing. According to reports, test results have confirmed that Spencer has been diagnosed with the Ebola virus. (Photo by Bryan Thomas/Getty Images)

Members of the Department of Defense's Ebola Military Medical Support Team dress with protective gear during training at San Antonio Military Medical Center, Friday, Oct. 24, 2014, in San Antonio. The team will consist of 20 critical care nurses, 5 doctors trained in infectious disease, and 5 trainers in infectious disease protocols. (AP Photo/Eric Gay)

NEW YORK, NY - OCTOBER 24: United States Postal Service mailman Keven Ngo makes a delivery to West 147th Street, while wearing a protective mask, on October 24, 2014 in New York, NY. Ngo said that he didn't typically wear a mask but, since Dr. Craig Spencer was diagnosed with Ebola, he had begun wearing the mask for his protection. (Photo by Bryan Thomas/Getty Images)

Demonstrators with the United African Congress (UAC) hold a rally for the 'Stop Ebola' movement in New York on October 24, 2014 the morning after it was confirmed that Doctor Craig Spencer, a member of Doctors Without Borders, who recently returned to New York from West Africa tested positive for Ebola, making him New York City's first Ebola patient. (TIMOTHY A. CLARY/AFP/Getty Images)

Police stand in front of the gate of The Gutter bowling alley in Brooklyn, New York, on October 24, 2014. Doctor Craig Spencer visited the bowling alley before being Quarantined at the Bellevue Hospital after testing positive for Ebola. Spencer, a member of Doctors Without Borders, who recently returned from treating Ebola patients in Guinea, the epicenter of the world's worst outbreak of the disease, tested positive for Ebola on October 23, making him the city's first Ebola patient. New York's mayor said America's largest city was fully equipped to handle Ebola as authorities sought to calm fears Friday about the virus spreading, after a doctor tested positive for the disease. (JEWEL SAMAD/AFP/Getty Images)

Hazmat crews arrive outside the apartment building of Dr. Craig Spencer, a member of Doctors Without Borders, October 24, 2014 in New York. Spencer, who has been diagnosed with Ebola is being treated in an isolation ward at Manhattan's Bellevue Hospital, a designated Ebola center. New York's mayor said America's largest city was fully equipped to handle Ebola as authorities sought to calm fears Friday about the virus spreading after a doctor tested positive for the disease. Craig Spencer, 33, was in a stable condition in isolation at Bellevue Hospital Center on Friday after testing positive for the illness, which has killed nearly 4,900 people in West Africa. He was rushed to the hospital with fever and gastrointestinal symptoms on Thursday, a week after returning from treating Ebola patients in Guinea with charity Doctors Without Borders. (DON EMMERT/AFP/Getty Images)

Workers from BioRecoveryCorp carry equipment from the apartment building of Ebola patient Dr. Craig Spencer Friday, Oct. 24, 2014, in New York. Spencer remained in stable condition while isolated in a hospital, talking by cellphone to his family and assisting disease detectives who are accounting for his every movement since arriving in New York from Guinea via Europe on Oct. 17. (AP Photo/Frank Franklin II)

A worker from BioRecoveryCorp carry equipment from the apartment building of Ebola patient Dr. Craig Spencer Friday, Oct. 24, 2014, in New York. Spencer remained in stable condition while isolated in a hospital, talking by cellphone to his family and assisting disease detectives who are accounting for his every movement since arriving in New York from Guinea via Europe on Oct. 17. (AP Photo/Frank Franklin II)

NEW YORK, NY - OCTOBER 24: A man shows the front page of a local newspaper while reading in the subway on October 24, 2014 in New York City. Dr. Craig Spencer, who returned to New York from Guinea 10 days ago, tested positive for Ebola on October 23 and is now being cared for at Bellevue Hospital. Spencer, a member of Doctors Without Borders, rode the subway after returning home. (Photo by Kena Betancur/Getty Images)

NEW YORK, NY - OCTOBER 24, 2014: A couple read news about Ebola on a screen in Times Square on October 24, 2014 in New York City. Dr. Craig Spencer, who returned to New York from Guinea 10 days ago, tested positive for Ebola on October 23 and is now being cared for at Bellevue Hospital. Spencer, a member of Doctors Without Borders, travelled around the city after returning home. (Photo by Kena Betancur/Getty Images)

NEW YORK, NY - OCTOBER 24: Bio Recovery Corporation employees carry equipment into 546 West 147th Street October 24, 2014 in New York City. After returning to New York City from Guinea, where he was working with Doctors Without Borders treating Ebola patients, Dr. Craig Spencer was quarantined after showing symptoms consistent with the virus. Spencer was taken to Bellevue hospital to undergo testing where he was officially diagnosed with the Ebola virus on October 23rd. (Photo by Bryan Thomas/Getty Images)

NEW YORK, NY - OCTOBER 24: Brooklyn Borough President Eric Adams speaks in front of The Gutter bowling alley where New York City's first Ebola patient visited before showing symptoms of the virus on October 24, 2014 in New York City. Dr. Craig Spencer, who returned to the US from Guinea 10 days ago, tested positive for Ebola on Thursday and is now being cared for at Bellevue Hospital. Spencer, a member of Doctors Without Borders, recently visited the Williamsburg bowling alley The Gutter. The Gutter has closed temporarily as an extra precaution and to be cleaned. (Photo by Spencer Platt/Getty Images)

NEW YORK, NY - NOVEMBER 11: Dr. Craig Spencer, who was diagnosed with Ebola in New York City last month, walks with New York Mayor Bill de Blasio at a news conference at New York's Bellevue Hospital after being declared free of the disease on November 11, 2014 in New York City. Spencer, a 33 year old Doctors Without Borders physician, was diagnosed last month after returning from treating patients in Guinea. He became the first person to test positive for the deadly virus in the New York City and was treated in isolation at the hospital. Spencer's case started a controversy about voluntary quarantine after he travelled the city in the days after returning from Africa unaware that he was carrying the virus. After being released, Spencer he is expected to return to his apartment in the New York City neighborhood of Hamilton Heights. (Photo by Spencer Platt/Getty Images)

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LAKELAND, Florida (AP) - Florida Gov. Rick Scott is ordering twice daily monitoring for anyone returning from places the U.S. Centers for Disease Control and Prevention designates as affected by Ebola.

Scott signed the order Saturday, giving the Florida Health Department authority to monitor individuals for 21 days. Scott said his administration asked the CDC to identify risk levels of returning individuals from specific parts of Guinea, Liberia and Sierra Leone but has not received information.

The governor said in a statement that the health department has already used a CDC web program to identify four individuals who returned to Florida after traveling to areas with Ebola.